Adding-machine.



R E. WING.

ADDING MACHINE.

APPLICATION 11.31) MAR. 31, 1913.

Patented Dec. 1, 19141 3 SHEETSSHEET 1.

R. E. WING.

ADDING MACHINE.

APPLICATION FILED MAR. 31, 1913. l, 1 1 8,988,

3 SHEETSSHBET 2.

i v E- m Patented Dec. 1. 1914.

R. E. WING.

ADDING MACHINE. APPLICATION FILED MAR. a1, 1913,

Patented D80. 1. 1914;,

3 SHBETSSHEET 3.

.nnp'licetiozi l r may concern:

that 1, R01" /l rnc, s citior is United States, residing at Dec-it, the county of lVayne and State of chigan, have invented certain new and useful provenients in .rldding-viachines, which the following is a specification. The object of the present invention is to prevent the possibility of inisoperation the prime mover as for example the fin inilier crank-handle which is pulled forwerd then released.

invention relates more specially to that pe of adding machines in which transfer or carrying operationsoccur at the close of an operation, which in the case of the crank-handle occurs just as that handle 1' e end of its return movement.

ecii'ically stated the object of the is to prevent niisoperation due to commencing a new operation of the machine before there has been time for the transfer or carrying operation to be completed.

The invention has been developed more especially for use in the well-known Burroughs adding machine, a characteristic feature of which is the onestep movement oi r ste racks beyond normal at the staring wheels whereby to effect the c: or of tens. ilceording to the particular form enibcdiinent or the invention hereinafter de scribed the object in View is accomplished by putting the prime mover of the mach ne to some extent under the control of the registering racks so a second initial a stroke of the prime mover cannc' be started racks which have been conditioned for fer or carrying movements complete movements.

erri'ng to the accompanying drswings strzte in detail the preferred of r he invention, i 1 repi t silo elevation it niachine of Burroughs type having apthereto an equipment for carrying out invention. all parts being illustrated at lOZ'lDfll, 2- is a horizontal section taken l 1 7 3 "1 on the line 2-2 o and coinined to an illustration ora through excessive speed or" reciprocation of an operation Whil engaged with ch form part of this specification and.

similar View illustrating a slightly different condition for the next step in the operation. l

The machine proper is now so familiarthrough disclosures of num rous prior use ents and through extensive commercial use, that it will be unnecessary to describe it or to make more than casual reference to parts thereof with wh ch my special equipment cooperates. The p *ime mover maybe taken as the handle shaft 300 or the counter shaft- 100, according to whether the machine is hand-operated or poweuoperated. It is here. shown as equipped for either hand or power operation. There is secured upon the shaft 306 the usual full-stroke. sector 311 which codperates with the familiar pawl 313 in hand operations of the machine. Vshen power-driven it is now customary to disable this pawl, in which connection see Benner Patent 903,536, issued November 10, 1908, and Kilpatrick Patent 928,981, issued July 27,1909. Whether or not the fullstroke pawl is operative, the sector is ordinarily free to start upon an initial stroke just at the time when-any transfer or can rying operations would be in order. These operations are efi ected through the medium of springs and are not periornicd until the sector has just about reached the end of a return stroke and the pawl 313 has straightcued to the position shown in Figs. 1, 3 and l or is free to do so, and hence there is a possibility of starting the sector on a new initial stroke before the transfer or carrying operations have been completed. This is of course equally true when the machine is power-operated and the pawl 313 is out of commission.

A briei' reference to the transfer or carrying mechanism will be useful this point. The reference numeral 610 designates the registering racks which have the usual slotspringpin connection with the registering levers 611 and the latter are as usual upheld normally as to their forwarr, arms by a restoring frame or yoke 613. The refercnce numeral 413 designates the familiar transfer pawls which norms a v her ing latter down in opposition to the springs which connect them to the levers 611. Normally the .upper ends of the racks are spaced from a cross-rod 210 which serves ation of the machine the forward arms of the" registering levers 611 move the length of the slots in the racks 610 and in the case of any racks which have been unlatched through" depression of amount keys or otherwise, theassociated levers 611 will in their further travel carry the racks down distances determined by the stops which the amountkeys set or distances determined by backward rotation of registering wheels to Zero, according to Whether the operation is an itemizing one or a totaling one. The present invention is not concerned with the totaling operation so that may be dismissed from further consideration. The registering of an item is done upon the return or upward movement of displaced racks, and if any transfer pawl 4:13 is tripped in the .course of this registering operation the associated rack 610 will be carried on up one step beyond its normal position, through the'medium of the spring which connects it to the associated lever 611.

For the purposes of the present invention 1 specially form the racks for cooperation with a lock for the sector 311 so that any rack moving upwardly beyond normal will lhring the lock into play to prevent the starting of a second initial stroke of the sector while the transfer or carrying movement of the rack is in progress Thus, each rack is formed upon its rear edge with a cam projection or lug 610 of limited vertical extent and inclined on top and underneath and formed with a very much abbre- I viated straight or fiat end edge. These lugs are designed to cooperate with a cross-rod 10 which normally is just above them ready to be acted upon by the upper inclined side or edge of any one of the lugs as clearly illustrated in Fig. 1; This cross-rod forms part of a bail which comprises side bars 11 at opposite sides of the machine (Fig. 2) and radius links 12 hung from shafts or cross- "r ods 200 such as commonly employed under the keyboard of the machine. Obviously.

this provides a swinging structure which may be thrown rearwardly by the action of any one of the lugs 610 upon the cross-rod 10. The right-hand side bar 11 of said swinging structure is in the neighborhood of the full-stroke sector 311 and cooperates with the lock which is to prevent the starting of an initial stroke thereof while any rack is moving upward beyond normal position. This lock takes the form of an arm 13 pivoted to a convenient frame plate of the machine and formed or provided with a head 13 which projects laterally for engagement with a shoulder 311 of the sector 311. The forward side of this look head is inclined for cooperation with-a roller 11 which is mounted upon a stud carried by a depending branch 11 of the right-hand side bar 11 of the aforesaid swinging structure.

A spring 15 which connects the arm 13 to a frame stud, tends to lift the arm and hold it above the path of movement of the sector 311. The arm is normally so held by said spring as illustrated in Fig. 1 and the roller 11 is at the base of the inclined face of the head 13. The forward movement of the swinging structure whichlis produced by gravity and also by the camming action of the inclined face of the head l3 upon the roller ll under actuation by the spring 15, is limited by the contact of an arm 12 against one of the cross-rods or shafts 200, said arm being secured to the rearward one of such crossshafts to which the rearradius links 12 are secured, this rearward one being a rock shaft.

It will be clear from the above described relationship ofparts that when any one of the racks 610 rises beyond normal its lug 610*v will thrust the swinging structure rearward and cause the roller 11 thereof to act with a camming effect upon the lock head 13 forcing the same down in front of the shoulder 311 and thereby preventing move-' limited vertical extent of the lugs are features which provide for the necessary unlocking. Referring toFig. .3, it will be noted that the rack there shown is at an intermediate stage in its movement beyond normal and the end edge or face of its lug is in contact with the rod 10 so that the lock is taking effect to prevent movement of'the sector 311. Referring to Fig. 4' which shows the rack at the limit of its movement beyond normal, it will be noted that the lug has passed upwardly beyond the rod 10 so that the swinging structure has been able to return at once to normal position freeing the sector 311.

In order to guard against any possibility of relocking the sector when the rack is pulled down from'its abnormal position or to guard against strain upon parts through unnecessary contact, the swinging structure is especially constructed so that 'camming action of the. lugs 610 upon the rod 10 in downward movement of the racks will have P am L lasequent 0 eis, ac

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3 Liv Q "HliliiOll has the e lock therefor v durlng Pans mover, and 6 rendered effecti 8. In emechine of the character described, vices, and a swinging structure operated the combmation of reglstering wheels, actuupon by the actuator cams and adapted t0, afmzzs therefor having cam projections, carengage and lock the starting devlces.

riers for the actuators, sletill-spring 0011- ROY EUGENE WING. 5 nested thereto, transfer paw s normally re- Witnesses: som'ining the actuators, a prime mover, a R. W. FAIRCHILD,

power drive applied thereto, starting de- R. S. MIELERT.

@epiee eic fibula meme may be ebteinefi 02? five eents each, by addressing the Commissioner of Eatents Washington, I), G. 

